Look plates



(N0 ModeL) 2 SheetsSheet 1.

T. DONAHUE & W. W. GONE I MACHINE FOR PUNGHING LOGK PLATES.

Patented Apr. 14, 1885.

; JDIVENTOR:

BY L (IAX/H/M/ Y ATTORNEYS WITNESSES:

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(No ModeL) 2 Sheets-Sheet 2.

T. DONAHUE & W. W. CONE.

MACHINE FOR PUNGHING LOOK PLATE.

No. 315,749. Patented Apr. 14, 1885.

N INVENTOR: iamcagfl 92 92am J ATTORNEYS.

UNITED STATES PATENT tries.

THOMASDCNAHUE AND VILLIAM W. CONE, OF TERRYVILLE, CONNECTICUT, ASSIGNORSTO THE EAGLE LOCK COMPANY, OF SAME PLACE.

MACHINE FOR PUNCHING LOCK-PLATES.

SPECIFICATION forming part of Letters Patent N0.315,749, dated April 14,1885.

Application filed July 15, 1884. (No modcll To all whom it may concern.-

Be it known that we, THOMAS DONAHUE and WILLIAM XV. Conn, ofTerryville,county of Litchfield, and State of Connecticut, have inventeda new and Improved Machine for Punching Lock-Plates, of which thefollowing is a full, clear, and exact description.

The object of our invention is to provide a new and improved machine forpunching lockplates accurately, rapidly, and cheaply.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a front view of our improved machine for punchinglock-plates. Fig. 2 is a side view of the same, parts being broken out.Fig. 3 is an enlarged plan view of the die, the hopper, and thefeed-slide. Fig. 4.- is an enlarged sectional elevation of the same.Fig. 5 is a side view of the hopper. Fig. 6 is an end view of the die.Fig. 7 is an end view of the punch and gage.

The shaft A, which is journaled to revolve in standards B,is providedwith a suitable flywheel, and on the shaft A eccentrics C areprovided,which operate a vertical slide, D, secured to a cross-head, E, guidedbetween the standards 13, which cross-head is provided in its bottomwith an aperture for receiving the punch Ron which a rectangular bentarm, F, is secured, in the downwardly-projecting part of which the gageG is piv0ted,and is pressed by a spring, G, against a screw, G held inthe end of the downwardly-proiecting part. The gage has its inner lowercorner beveled. The die-block H rests upon the die-bed I, on the bedproper, J, and the said die-block is provided with a longitudinalvertical slot, a, at the base of which a horizontal slot, I), is formed.The die is also provided with an aperture, 0, through which the punchcan pass. A curved spring-strip,d,is held in one part of the die, and isadapted to press against the edge of a. lock-plate to be punched in thedie.

Ahopper, K, is held at an inclination of forty-five degrees to thedie-bed 1, directly in front of the die, and at the base of the hopper astop, L, is provided, between which and 5o the lower end of the hopper Kan L-shaped slot is for1ned,through which a lock-plate can be moved. Acarriage, M, slides on an arm, M, projecting from the die-bed I, andfrom the said carriage a tongue, N, projects toward the die, the saidtongue being L-shaped in cross-section, and being in line with the bottom of the hopper Kand the slot (till the die, so that when the carriageis reciprocated the tongue N can push the lock-plate into the die.

The carriage M is provided with a downwardly-projecting lug or pin, 0,which is connected by an angle-bar, C, with an arm, 0, on the rockingshaft 1?, connected by a connectingrod, P, with a vertically-slidingrod,

P having ahead, P", on which a cam-pin,Q,

of a disk on the shaft A acts. The rod P is surrounded by a spring forpressing it upward. The arm M is preferably beveled, and the sides ofthe carriage M are bent down over the said arm for the purpose ofguiding the carriage and holding it on the arm M, which forms a track.Behind the die an inclined plate, R, is provided, down which thelockplates can slide.

The operation is as follows: Theloclrplates m,which are bentrectangularly, so as to have a selvage, are placed in an uprightposition on the inclined hopper K, in such a manner that the outer edgeof the selvage rests on the base of the hopper K, as shown in Fig. 1.

The carriage M is rcciprocated from the rocking shaft P by means of thecrunkarm and the angular arm 0. The end of the tongue N of the carriageM strikes the edge of the lowest lock-plate, and pushcs the saidlock-plate in the direction of the arrow a from the lower end of thehopper K into the L-shapcd s]ot a b of the die H. By this time the punchF is moved downward, the gage G,which has been previously adjusted inthe proper position, 0

The

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. The combination,with a punch and with 5 a die having an L-shapedslot, of a sliding carriage provided with a tongue having an L-shapedcross-section, and of a hopper located between the sliding carriage andthe die, substantially as herein shown and described. 2. Thecornbination,with the die H andthe punch F, of the inclined hopper K,the plate L at the base of the hopper, and the sliding carriageM,provided with a tongue, N, adapted to pass through the space betweenthe lower I 5 end of the hopper and the plate L, substantially as hereinshown and described. I 3. The combination,with the punch F,of the die H,having an L-shaped slot, at b, and provided with a spring, d,substantially as herein shown and described.

4. The combination, with a die, of a vertically-movable punch providedwith an adj 11stable gage held on an arm of the punch, substantially asherein shown and described.

THOMAS DONAHUE. WILLIAM W. CONE.

Witnesses:

JAsoN C. FENN, R. J. PLUMB.

